| 引用本文: | 李少奇,严战友,崔永昌,侯雪可,王子俊,乔博.三维重构黏弹性半空间体上多层板连续上坡路面动力学响应[J].哈尔滨工业大学学报,2025,57(3):129.DOI:10.11918/202304011 |
| LI Shaoqi,YAN Zhanyou,CUI Yongchang,HOU Xueke,WANG Zijun,QIAO Bo.Dynamic response of continuous uphill pavement withmulti-layer plate on viscoelastic half-space foundation on a 3D reconstructed[J].Journal of Harbin Institute of Technology,2025,57(3):129.DOI:10.11918/202304011 |
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| 三维重构黏弹性半空间体上多层板连续上坡路面动力学响应 |
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李少奇1,严战友2,3,崔永昌1,侯雪可1,王子俊3,乔博3
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(1.石家庄铁道大学 交通运输学院,石家庄 050043;2.省部共建交通工程结构力学行为与系统安全国家重点实验室 (石家庄铁道大学),石家庄 050043;3.石家庄铁道大学 土木工程学院,石家庄 050043)
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| 摘要: |
| 为研究行驶车辆对山区道路所造成的动力学响应,利用随机正弦波叠加法以MATLAB联合TruckSim软件重构了三维路面不平度模型,采用黏弹性半空间体上无限大多层板模型模拟路基结构,通过三轴重型车辆连续上坡工况对车路相互作用三向力及车辆行驶过程进行分析,使用自行编制的广义积分计算程序对4层板路面垂向位移进行求解。结果表明:相比2D路面,3D路面的纵向力与横向力最大值、均方根均相差较大,其中3D路面比2D路面横向力高出42.95%；车辆行驶于圆形缓和坡道时,车路相互作用的三向力出现明显改变,其中,通过凹形坡道时纵向力最大值超出整个过程纵向力平均值的6倍,横向力有先增加、后减小、再增加、最后趋于平稳的一个过程；多个轮胎对道路产生的位移影响不是每个轮胎作用的简单相加,需要根据轮胎位置、作用距离等综合考虑。研究结果可为重型车辆连续上坡、通过拱形桥、涵洞等多个工况提供技术指导。 |
| 关键词: 三维路面 黏弹性半空间 无限大多层板 连续上坡 三向力 垂向位移 |
| DOI：10.11918/202304011 |
| 分类号:U416.01；O344.3 |
| 文献标识码:A |
| 基金项目: |
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| Dynamic response of continuous uphill pavement withmulti-layer plate on viscoelastic half-space foundation on a 3D reconstructed |
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LI Shaoqi1,YAN Zhanyou2,3,CUI Yongchang1,HOU Xueke1,WANG Zijun3,QIAO Bo3
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(1.School of Transportation, Shijiazhuang Tiedao University, Shijiazhuang 050043, China; 2.State Key Laboratory of Mechanical Behavior in Traffic Engineering Structure and System Safety（Shijiazhuang Tiedao University）, Shijiazhuang 050043, China; 3.School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China)
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| Abstract: |
| The study investigates dynamic response of vehicles driving on mountainous roads by developing a three-dimensional (3D) road roughness model using the random sine wave superposition method, integrated with MATLAB and TruckSim software. The roadbed structure is modeled as an infinite multi-layer plate on a viscoelastic half-space foundation. The three-dimensional interaction forces between the vehicle and the road, as well as the vehicle′s driving dynamics, are analyzed during the continuous uphill operation of a three-axle loaded vehicle. A self-developed generalized integral calculation program is employed to determine the vertical displacement of a four-layer pavement. The results reveal significant differences between 3D and 2D pavement models in terms of the maximum and root mean square values of longitudinal and lateral forces, with the lateral force on 3D pavement being 42.95% higher than on 2D pavement. When navigating circular ramps, the three-dimensional interaction forces exhibit notable variations. Specifically, when traversing a concave ramp, the peak longitudinal force can exceed the average longitudinal force by up to six times, while the lateral force demonstrates a pattern of initial increase, followed by a decrease, another increase, and eventual stabilization. Furthermore, the displacement impact of multiple tires on the road is not simply additive but must be evaluated based on factors such as tire position and effective distance. The findings provide valuable technical insights for the operation of heavy vehicles in scenarios involving continuous slope climbing, arch bridges, and culverts. |
| Key words: 3D pavement viscoelastic half-space infinite multi-layer plate continuously climb slopes three-dimensional force vertical displacement |
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